/'rɪvn; `rɪvən/
adj [pred 作表语] (fml or rhet 文或修辞) split; torn violently 分裂; 撕裂
*a family riven by ancient feuds 由于世代结仇而分裂的家族.

adj formal
[Date: 1100-1200; Origin: Past participle of rive 'to split' (12-21 centuries), from Old Norse rifa]
if a group of people are riven, they are divided by disagreements, especially in a violent way
riven by/with
　a community riven by religious differences
if an object is riven, it is divided into two or more parts